报告题目：Applying Noether's theorem to the pure AdS3 gravity

报告人：吴洁强 副研究员（中国科学院理论物理研究所）

报告时间：2025年5月29日（周四）下午15:30 - 16:30

报告地点：北洋园校区49教410室

报告摘要：

In this work, we revisit the approach with the covariant phase space formalism for the asymptotic symmetry analysis in the pure AdS3 gravity. We modify the approach to a version which is exactly in the framework of Noether's theorem. The key point in the modification is to take a systematical treatment of the boundary effects. In particular, we start from defining the pure AdS3 gravity in Lagrangian formalism, where we adopt proper asymptotic boundary conditions, and we take holographic renormalization in the off-shell level. We then follow Noether's theorem step by step with a careful treatment of the boundary terms. Following our modified approach, we get the following three results. First, we show that the asymptotic symmetries are indeed symmetries of the pure AdS3 gravity in the sense of Noether's theorem. Second, we compute the charges of the asymptotic symmetries with the expression of Noether charge, which reproduces the same result from the ordinarily used approach with the covariant phase space formalism. Third, we compute of the brackets between the charges of the asymptotic symmetries for a general metric of the asymptotic boundary conditions.

报告人简介：

吴洁强2017年于北京大学物理学院获博士学位，随后分别在麻省理工学院、加州大学圣塔芭芭拉分校从事博士后研究工作，2022年加入中国科学院理论物理研究所，任副研究员，研究方向为量子引力和黑洞物理。